Machine for forming calks.



J. H. TAYLOR.

MACHINE FOR FORMING CALKS.

APPLICATION FILED JAN. 16. 1914.

Patented May 30, 1916.

4 SHEETS-SHEET l.

Jnvenior Aifnrney.

Wiinesses@ wil- J. H. TAYLOR.

MACHINE FOR FORMING CALKS.

APPLICATION FILED JAN. 16. 1914.

Patented May 30, 1916.

4 SHEETSSHEET 2.

flfiorney.

THE COLUMBIA PLANOGRAPH 4:0. WASHINGTON, D. C-

J. H. TAYLOR.

MACHINE FOR FORMING CALKS.

APPLICATION FILED JAN. 16, 1914.

1,1 %,98. Patented May 30, 1916.

4 SHEETSSHEET 3- Wiiness es.

fliiorney.

jnvenior J. H. TAYLOR,

MACHINE FOR FORMING CALKS,

APPLICATION man JAN. 16. 1914 L18Q Patented May 30,1916.

4 SHEETS-SHEET 4.

Afiawney.

JAMES H. TAYLOR, OF PAWTUGKET, RHODE ISLAND, ASSIGNO'R OF ONE-HALF TOTHOMAS RILEY, 0F PAWTUGKET, RHODE ISLAND.

MACHINE FOR FORMING C'ALKS.

Specification of Letters Patent.

Patented May 39, 19116.

Application filed January 16, 1914. Serial No. 812,407.

To all whom it may concern Be it known that I, JAMES H. TAYLOR, acitizen of the United States, residing at Pawtucket, in the county ofProvidence and State of Rhode Island, have invented certain new anduseful Improvements in Machines for Forming Calks, of which thefollowing is a specification.

My invention relates to a machine for automatically forming, from ametal blank calks adapted for use in horse shoes. It has heretofore beenattempted to make calks by drop forging, which method has been slow andexpensive. It has been considered impossible to employ rolls for thispurpose because of the problem of disposing of the surplus metal that isnecessarily displaced by the compression of the rolls and whichnaturally advances before the rolls in the direction of the movement ofthe rolls and thus would either distort the metal pattern or prevent theoperation of the rolls.

The essential objects of my invention are to form calks automatically byrolling rather than by forging; and to attain this end by a mechanism ordevices, easy to operate, inexpensive to construct, and which shallproduce a maximum of calks in a minimum of time.

To the above ends primarily my invention consists in such parts and insuch combination of parts as fall within the scope of the appendedclaim. r

In the accompanying drawings which form a part of this specification,and where-- in like reference characters indicate like parts throughoutthe views: Figures 1 and 2 are front and side elevations respectively ofmy machine, Fig. 3, a section on u u of Fig. 1, Figs. 4, 5 and 6, side,front, and plan views respectively of the feeding device. Fig. 7, asection of the same on line o o of Fig. 4. Fig. 8, a section of the diesand adjacent parts on line w w of Fig. 1. Figs. 9 and 10, fiatdevelopments of portions of the top and bottom die peripheriesrespectively, Fig. 11, an enlarged partial section of the dies on linea: 00 of Fig. 8, Fig. 12, a complete section on line a w of Fig. 8,Figs. 13 and 14, sections on lines 3 y and 2 a respectively of Fig. 10,Figs. 15 and 16, front and side elevations respectively of a finishedcalk, Fig. 17 an enlarged section of a modified form of my inventiontaken on a line corresponding to line 00 a: of Fig. 8, Figs. 18 and 19,fiat developments of portions of modified top and bottom die peripheriesrespectively, and

Figs. 20 and 21, end and side elevations of the roll pin.

In the embodiment of the present invention the assemblage of parts maycomprise, n a general way, a base 2, and shaft housngs 3 and 4, whichhousings are identical in construction, and a description of one willserve for both, similar reference numerals being employed forcorresponding parts, each housing in the present instance comprisingvertical guide ways 5 in which are located, with a sliding fit, splitbearing blocks 6, for the driving shaft 7. Resting upon these is block 8provided with a cen tral vertical bore 9, in which is a helical spring10 whose lower end presses against the block 6, and whose upper. endpresses against a split bearing block 11, which rests upon the block 8and supports a driven shaft 13. This spring forms a yielding cushionbetween the blocks 6 and 11. Upon the tops of the vertical guide ways 5of the housings 3 and 4 are respectively retaining plates or straps 15and 16 removably attached by bolts 17 and 18 or otherwise. One end ofthe driving shaft is mounted in an auxiliary bearing 20 upon the end ofthe bed, and has fixed thereto a wheel 22 driven by a belt 23 from anysource of power. Adjacent to this driving wheel upon the shaft is abalance wheel 24. Intermediate the housings upon the driving shaft aredriving gears 26 and 27 meshing respectively with gears 28 and 29 fixedto shaft 13. The teeth of gears 28 and 29 are preferably timed, oneslightly in advance of the other, in order to compensate for backlash.

In order to meet the great strain which might otherwise tend to springthe shafts 7 and 13, an auxiliary bearing frame is provided, best shownin Fig. 2. This comprises a yoke or cross piece 32 provided with acentral bearing or bore 33 for the shaft 13, and which is slidable onvertical posts or rods, 35, fixed at their lower ends to a cross piece36, provided with a central bore 38 in which is journaled the end of theshaft 7. The piece 32 is retained against excessive vertical movement bynuts 39 upon the upper ends of the rods, and which bear against theupper face of the cross piece. On intermediate portions of the rods 35are shoulders 40 supporting helical springs 41, surrounding the postsand bearing against the under face of the piece 32.

are located at intervalsin openings 52 Fixed to shafts 13 and 7respectively are two rolls 43 and 44. The member 43 comprises a core 45and provided with an an .nular recess 46 at one end to receive a shoul-7 44; is-identical in construction, comprising the core 61, fiange'62,die 63, screws 64, and

retaining plate65. A nut 67 and washer 68 engage respectively thethreads 69 on shaft 7, and the shaft itself. The form of cores and diesherein disclosed adapts the same for a ready change of dies, but itis Ievident that such is not absolutely essential.

. depressions 17 3.

pressions 73 are inclined depressions 75 of r The face of the die 50 isprovided with a series of depressions and elevations or cutting edgesshown in detail in Figs. 9 and 11.

Two spaced parallel annular shoulders 70 and 71 upon the ends of the dieperiphery I form partitions for the stock to be operated upon. Extendingtransversely of the die half its width. from the shoulder 71 are aseries of spaced substantially semi-circular Alternating with the dethesame length as the depressions 73 but of greater breadth. Thedepressions 73 and 75. are separated by parallel transverse shoulders orcutting edges 78. The other half of the die face has alternatingtransverse depressins7 9 and 80, similar to 73 and75 inshape anddimensions, but in staggered relationto each other. The depressions 79and'80 are separated by parallel shoulders 84. The inner ends of theshoulders 84 may be connected .with the inner ends of shoulders 78 byshoulders 85 in alinement with each other. The depressions 73 and 79 aredeeper than the depressions and 80. v

The die 63 is similar in general construction to the die 50. It has thepartition shoulders 87 and 88. Adjacent the latter are alternatedepressions 89 and 90 corresponding in form and arrangement withdepressions 73 and 75. Depressions 94 and 95' similar in shape andlocationto 79 and are adjacent the partition 87. Parallel shoulders 98separate the depressions89 and shoulders 99 separate depressions 94 andshoulders 100 connect the ends of shoulders 98 and 99. The locations ofshoulders 98, 99 and 100 correspond with those of shoulders 78, 84 and85 of the companion die 50. The depressions 89 and 94 are generallydeeper than'the depressions 95 and 90.

It will be observed that the transverse disposition of the walls oredges 78, 84, and98, 99 upon the die peripheries, tends to prevent theaccumulation of metal in advance of the contacting point of the dies,which accumulation would choke or stop the advance of the dies andprevent any rolling operation. The transverse disposition of thecompanion cavities also assists in disposing of the otherwise surplusmetal. The general depths of the portions 73, 79, 89 and 94 beinggreater relatively to the general depths of their corresponding adjacenttransverse portions 80, 75, 95 and 90 respectively, causes the greatermasses of metal in the former portions to move or be squeezedtransversely into the latter portions, thus still further preventing theaccumulation of a choking mass, and disposing of surplus metal.

As the metal blank passes between the rolls 43 and 44. each die shapesone half of each unit formed by the coiiperation of the die faces, itbeing understood that the shoul- Y ders 78, 84, and 85 are timed tocontact or nearly contact with the shoulders 98, 99, and 100, wherebythe material between these shoulders is either severed or rendered sothin as to make it possible to divide the resultant units into theconstituent parts manually. By reference to Figs. 15 and 16 the form ofthe resultant unit may be observed in the finished calk consisting of atapering head 102 and a cylindrical shank 104. The heads are formed bythe depressions 75', 80, 90, and95, while the shanks 104 are formed bythe depressions 73, 79, 89, and 94.

If preferredeach die may be split on the line of shoulders 85 and 100,thus making two companion die members on each roll. The advantages ofthis in practical use are convenience in grinding the die faces, andlessening the expense of any accidental breakage of the die surface. InFigs. 17, 18 and 19 is shown this modified form of my invention.

The upper die 50 is herein shown as two adjacent dies 109, and the lowerdie 63, as independent annular dies 111 and 112. In actual use theabsence of the central annularly arranged series of shoulders 85 and 100from the modified die couplets or from the original dies does notinterfere with, nor are they essential to, the perfection and efliciencyof the product of the rolls. These split dies may be mounted, like theintegral dies, on their respective rolls in any convenient manner. Inthe present instance the dies 109 and 110 have abutting against theirrespective outer faces bearing rings 115 provided with perforations 116.The plate 56 has also perforations 117.

' Through these two sets of perforations and the openings 52 of the diespassthe bind ing screws 51. The split dies 111 and 112 are similarlymounted on rolls, having bearing rings 120 held against the dies by thescrews 64.

The blank is guided and controlled by the following device. A bracket orsupporting plate 122 is fixed by screws 123 or otherwise to the end ofthe machine base 2, and has intermediate its length an arm or extension125 provided with an inclined upper face carrying a guide plate 127provided with a base 128 adjacent the dies and provided with marginalflanges 129. The guide plate is in the present instance attached to theextension 125 by an adjusting screw 130 passing through an oblong slot131 in the extension 125 and engaging a threaded opening 132 in theguide plate. A screw 133 in plate 122 may also engage a threaded opening134 in member 127. In the forward portions of the flanges 129 is a pin135 on which is mounted a guide roller 136. The blank, when fed by hand,is passed over the guide plate 127 in contact with the roller 136. Infeeding blanks of. smaller breadth an auxiliary guide 138 is placedbetween the flanges 129. This plate comprises a base 139 and sideflanges 139, and rests partially on plate 127 and partly on a spacingblock 140 on the said plate. A screw 142, passing through the blockengages in a threaded opening 143 in the base 139 of the auxiliaryguide.

In order to uniformly and intermittently feed the blank over theauxiliary guide the following device is employed. A supporting bar orplate 145 rests on the extension 125 and is fixed intermediate the plate122 and plate 127 by the screw 133 passing through an opening 146 insaid bar. A longitudinally slidable bar 148 rests on this plate beneatha rib 149 on the plate 122. On the forward end of the slide 148 is arounded shoulder 150, and spaced therefrom a stop projection 151. Theshoulder 150 is in the path of a pin 153 provided with a base 154adjustably fixed in a radial way 154 shown in Figs. 20 and 21 on theside of the roll 43 whereby the slide is forwardly reciprocated at eachrevolution of the rolls. The change of-the radial position of the pinvaries the degree of advance of the blank.

In the rear portion of the slide 148 is a longitudinal slot 155 throughwhich extends a pin 156 on which are washers 158 at each side of theslide. Upon the threaded end portion of the pin is a nut 160 bearingagainst one washer; also a butterfly nut 161 abutting against the otherwasher. A block 163, pivoted upon the outer end of the pin, registersbetween the flanges 131 of the auxiliary guide plate and is adapted toengage the rear end of the blank in the guide.

of the tension of the spring. The block I 163 advances a blank at eachadvance of the slide 148, and for blanks of different lengths the radialposition of the pin 153 is changed. For convenience a lug 173 on plate122 is perforated to serve as a holder for a pin 174 which may be used,when desired, to lock the slide relatively to the rest of the mechanism,by inserting it in openings 176 and 177 in the slide and in the plate122 respectively.

Upon the rear side of the housing 3 is an integral extension 178 havinga pin 179 which passes through an eye 180 in a plate 181 fixed to thebottom of a guide plate 182 whereby the latter is pivoted intermediateits length as shown in Figs. 2 and 4. The forward end of this plate isretained near the periphery of the lower die by virtue of a spring 184having its lower end attached to the plate 181 in the rear of the pivotpin 17 9, and its upper end attached to a pin 185 in an arm 186 integralwith the extension 178. The plate 182 prevents the stock from adheringto the lower die, and has marginal flanges 188 to guide the material.Its forward end is supported by a rod 189 in the housing 3. To guide thematerial from the upper die a curved arm 190 contacts with the die, andis supported by a roller 191 on a pin 192 in the extension 178. The armis pivoted on a pin 194 in said extension.

What I claim is In a machine for forming calks, the combination ofcoiiperating rolls, each roll being provided with a series oftransversely disposed alternating curved and noncurved depressions, andwith a second series of similar transversely disposed depressionsparallel with the first series and with the respective depressions instaggered relation with respect to the depressions of the first series,transverse partitions upon each roll bounding the several depressionsand adapted to register with the partitions upon the other roll, whenthe rolls are rotated, and means for rotating the rolls in unison witheach other.

In testimony whereof I have atfixed my signature in presence 'of twowitnesses.

J AMES H. TAYLOR.

WVitnesses HORATIO E. BELLows, VVASHINGTON R. PRESCOTT.

flopiea of this patent may be obtained for five cents each, byaddressing the Commissioner of Patenta,

' Washington, D. G.

